Regensburg 2016 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 89: Quantum Dots and Wires: Lasing

HL 89.6: Vortrag

Donnerstag, 10. März 2016, 17:30–17:45, H13

Ultrafast optical pulse modulation in hybrid silicon nitride/colloidal quantum dot systems — •Christian Ulbrich¹, Bastian Herzog¹, Pieter Geiregat^2,3, Yunpeng Zhu³, Yücel Kaptan¹, Mirco Kolarczik¹, Zeger Hens², Dries van Thourhout³, Ulrike Woggon¹, and Nina Owschimikow¹ — ¹Institut für Optik und Atomare Physik, Technische Univeristät Berlin, Germany — ²Physics and Chemistry of Nanostructures Group, Faculty of Science, Department of Inorganic and Physical Chemistry, Ghent Univeristy, Belgium — ³Photonics Research Group, Faculty of Engineering and Architecture, Department of Information Technology, Ghent Univeristy, Belgium

To explore the prospects for the integration of quantum dots with silicon photonics, we investigate the effect of colloidal PbS quantum dots coated onto SiN waveguides on the optical properties of the waveguides. The quantum dots are coupled to the waveguide mode via the evanescent field. In heterodyne detected pump-probe experiments we study (cross)-amplitude and -phase modulation of a probe pulse induced by optical pumping of intra- and interband transitions of the quantum dots.